Morgan Hill — Design Review

Last reviewed: July 2, 2026

Overview

Morgan Hill requires discretionary design permits (commonly called design review or architectural/site plan review) for many types of new development and visible exterior changes to ensure projects meet the city's design criteria and district standards. The primary local rule is § 18.108.040 (Design Permits), which sets applicability, review authority, findings, exemptions, and the design criteria the city uses to judge projects.

Below is a Morgan Hill–specific guide to when design review applies, what the city looks for, how it interacts with district standards and overlays, and practical guidance for applicants.

Important related pages (first natural mention of each is linked): the city's zoning & planning overview, the municipal zoning rules (where design permit authority lives), development standards (setbacks, heights, coverage), parking, overlay districts, landscaping and screening, historic preservation, ADUs, and the statewide California Building Standards Code (Title 24) when building permits follow design review.

What the code requires (core rules)

• Design permits are governed by § 18.108.040; the code identifies which projects require a design permit, who decides, the review criteria, findings for approval, and exemptions.

• Findings for approving a design permit are explicit and narrow: the project must be consistent with the General Plan and applicable plans, comply with the zoning code and other municipal regulations, substantially comply with the city's design standards/handbook, meet CEQA review, not be detrimental to public health/safety/welfare, comply with the design review criteria, and, for new residential development, meet RDCS commitments. See § 18.108.040 (Findings).

• The code lists mandatory design review criteria (community character, neighborhood compatibility, pedestrian environment, privacy, safety, massing/scale, architectural style, articulation, materials, parking design, landscaping, signs, lighting, accessory structure design, and screening of utilities/trash) that projects must satisfy to the extent they apply. These criteria are within § 18.108.040.H.

• Some projects are explicitly exempt from design review (examples include building additions smaller than 500 sq. ft. not visible from a public right-of-way; exterior work not visible from a right-of-way; window/door/roof replacement; repainting with like-quality materials; small landscaping changes; parking lot resurfacing not affecting counts). See § 18.108.040.F for the exemption list.

• Landscaping plans are required for projects that trigger design review; landscaping standards and required plan contents are in § 18.64.020–.040.

• The review authority (administrative vs. Planning Commission vs. City Council) and appeal paths are spelled out in the review/decision table and in § 18.108.040 and related permit chapters (Chapter 18.104 and the review table). Design permits are processed under § 18.108.040 with appeal rights per Chapter 18.112.

District-by-district breakdown (where design review interacts with district rules)

Below are the principal base zoning districts in the code and how design review applies in each. Bolded district names and key local standards are from the Morgan Hill Zoning Code.

Residential Detached districts — RDL, RDM, RDH

• Purpose: accommodate detached single-family housing at low to high densities and protect neighborhood character. See Chapter 18.16 (Residential Detached) for district rules. Not all specific lines fit on one page; verify parcel-specific requirements.
• Typical permitted uses: single-family dwellings, accessory structures, limited home occupations (per Chapter rules).
• Key dimensional standards (examples): minimum lot sizes and setbacks vary by subdistrict; consult the district tables in Chapter 18.16 and cross-check with Alternative Standards if applicable. Where small-lot/medium-density standards differ, see § 18.40.
• Where it applies: citywide where zones are mapped; design permits are required for new buildings or additions meeting triggers in § 18.108.040. Landscaping and RDCS commitments may apply (see § 18.64.020 and RDCS rules).

Residential Attached districts — RAL, RAM, RAH

• Purpose: provide a range of attached housing types (townhomes, duets, courtyard homes, multifamily) with design standards tailored to small-lot contexts; see Chapter 18.18 and Chapter 18.40 (Alternative Standards) for details. § 18.40.020 explains applicability for RAL and RAM.
• Typical permitted uses: duplex, townhouse, multi (varies by RAL vs. RAM); see Table 18.40‑1 for permitted housing types and limits.
• Key dimensional standards (from Table 18.40‑2 examples): Lot width minimums (e.g., 24–60 ft depending on housing type), lot coverage maximums (e.g., 40–60% for some types), front setbacks (examples: 10–20 ft depending on type). See Table 18.40‑2 and notes for exact values; aggregate lot coverage limit of 40% for RAL/RAM subdivisions is specified in § 18.40.060.A.
• Where it applies: RAL and RAM mapped areas and any project using the Chapter 18.40 standards must obtain a design permit per § 18.40.030.

Mixed-Use districts — MU-D, MU-N, MU-F

• Purpose: permit mixed residential and commercial uses with urban design expectations; see Chapter 18.20 (Mixed Use) for the base standards (development standards and allowed uses). Not all detailed dimensional tables reproduced here — consult the chapter. Not found in retrieved materials: a single‑line summary of MU tables. Verify with the code for parcel specifics.
• Design review: new buildings and significant exterior changes are generally subject to design review under § 18.108.040, and mixed-use projects frequently have specific design and pedestrian‑oriented requirements reflected in the design criteria.

Commercial districts — CO, CN, CG, CH, CS

• Purpose: serve varying commercial functions from neighborhood-serving (CN) to community/regional (CG, CH) and office (CO). See Chapter 18.24 for permitted uses and development standards; Table 18.24‑2 lists lot-area minimums and other site standards.
• Typical permitted uses: retail, offices, services (per table and footnotes; some uses conditional).
• Key dimensional standards: Table 18.24‑2 shows district-specific lot area minimums (examples include 6,000–20,000 sq ft) and includes residential transition standards when abutting residential zones (see § 18.24.030 and § 18.92.130). Design review is required for many commercial developments via § 18.108.040.

Planned Development Combining District — PD

• Purpose: allow customized master-planned development with its own development standards (height, setbacks, coverage) established in a PD master plan. See § 18.30.050.
• Design review: any development that was not explicitly approved as part of the PD master plan must obtain a design permit under § 18.108.040; PD master plans themselves require public hearings and approvals (PD master plan + rezoning).

Overlays and special zones (examples)

• Hillside, G (Geologic), and historic overlays add requirements and often make design review mandatory (see overlay chapters and the PD/hillside rules). Example: hillside rules and geologic clearance requirements reference additional reviews; geologic clearance applies in the G overlay before discretionary approvals. See § 18.30.040 / hillside and § 18.70.040 for geologic clearance. Not every overlay is reprinted here; always check the mapped overlays on a parcel.

Quick decision‑relevant table (common triggers and code refs)

Practical guidance / interpretation (plain-English synthesis)

• If your project changes a building or site that will be visible from the street, larger than the small-exemption thresholds, or creates new buildings, plan on a design permit under § 18.108.040. The community development director performs intake and may route the application to an administrative decision or to the Planning Commission depending on scope.

• Expect the reviewers to test your design against the code’s design review criteria (community character, neighborhood compatibility, massing/scale, articulation, materials, landscaping and parking design). Prepare drawings and a narrative that map each criterion to a design response and reference the city’s Design Review Handbook (the findings require “substantial compliance” with it). § 18.108.040.H–J sets this frame.

• Where your lot sits inside an overlay (hillside, geologic, historic), additional materials and clearances (e.g., geologic clearance for G overlay sites) are required before building permits; those overlays often make design review mandatory and enable additional conditions. Verify overlays early via the city. See § 18.70.040 for geologic clearance and the PD/historic provisions in Chapter 18.60 / § 18.30.050.

• Landscaping and screening are not optional when design review applies — submit a full landscape plan per § 18.64.040 with species, sizes, irrigation, and existing tree protection.

• Parking / driveway design will be reviewed as part of the site design and must meet Chapter 18.72 standards. If you need adjustments (e.g., reduced spaces or dimensions) those are processed as separate adjustments or minor exceptions per § 18.108.070. Link to the city’s parking page for more context.

Checklist (what an applicant must satisfy for a typical design permit)

• Pre‑application conference recommended with Development Services (Chapter 18.104 guidance).
• Completed design permit application and fee, with site plans, elevations, material/color samples, lighting plan, and landscape plan per § 18.64.040.
• Written narrative mapping the project to the design review criteria in § 18.108.040.H and the findings in § 18.108.040.J.
• Check and supply any overlay-specific studies (geology, historic resource documentation, tree assessment) required by the applicable overlay chapter.
• Parking calculations and any requested adjustments documented (Chapter 18.72).
• CEQA checklist/initial study as directed by staff (design permit findings require CEQA compliance). § 18.108.040.J.3–4.

Risks & Ambiguities

Plain-English Summary

If your project builds new structures or makes visible exterior changes in Morgan Hill, expect to get a design permit under § 18.108.040; staff will check the project against explicit design criteria (neighborhood fit, massing, materials, landscaping, parking, etc.) and the findings in the zoning code before approval. Prepare a design narrative, drawings, and a landscape plan, and verify overlay, RDCS, and parking implications early.

Source References

• Morgan Hill Zoning Code, Title 18 (Design Permits — Design Review): § 18.108.040 (application, criteria, findings, exemptions).
• Morgan Hill Zoning Code, Chapter 18.64 (Landscaping) — landscaping applicability and plan contents (§ 18.64.020–.040).
• Morgan Hill Zoning Code, Chapter 18.40 (Alternative Standards for Medium Density Residential Development) — applicability, permitted housing types, aggregate lot coverage (§ 18.40.020–.060, Table 18.40‑1/2).
• Morgan Hill Zoning Code, Chapter 18.30 (Planned Development Combining District) — PD master plan, PD standards, and design review requirement (§ 18.30.050).
• Morgan Hill Zoning Code, Chapter 18.24 (Commercial districts) — permitted uses and development standards (Table 18.24‑2/3). § 18.24.030.
• Morgan Hill Zoning Code, Chapter 18.104 / review & decision tables — application processing, pre‑application, and review authority.
• Morgan Hill Zoning Code, Chapter 18.70 (Geologic clearance in the G overlay) — geologic clearance rules (§ 18.70.040).

Retrieved passages

• Morgan Hill Zoning Code (§ 5) High relevance show source text
• Morgan Hill Zoning Code (Chapter 18.88) High relevance show source text
• Morgan Hill Zoning Code (Chapter 18.112) High relevance show source text
• Morgan Hill Zoning Code (Section 18.108.040) High relevance show source text
• Morgan Hill Zoning Code (§ 5) Medium relevance show source text
• Morgan Hill Zoning Code (Chapter 18.40) Medium relevance show source text
• Morgan Hill Zoning Code (Title 17) Medium relevance show source text
• CBC § 5 (Section 18.30.050.) Medium relevance show source text
• Morgan Hill Zoning Code (Section 18.108.040) High relevance show source text
• Morgan Hill Zoning Code (Section 65914.900) Medium relevance show source text
• Morgan Hill Zoning Code (Chapter 18.96) Medium relevance show source text
• Morgan Hill Zoning Code (Section 18.104.090) Medium relevance show source text

Cited sections

• Morgan Hill Zoning Code, Title 18 (Design Permits — Design Review): **§ 18.108.040** (application, criteria, findings, exemptions). (Title 18)
• Morgan Hill Zoning Code, Chapter 18.64 (Landscaping) — landscaping applicability and plan contents (**§ 18.64.020–.040**). (Chapter 18.64)
• Morgan Hill Zoning Code, Chapter 18.40 (Alternative Standards for Medium Density Residential Development) — applicability, permitted housing types, aggregate lot coverage (**§ 18.40.020–.060**, Table 18.40‑1/2). fileciteturn1file17turn1file19 (Chapter 18.40)
• Morgan Hill Zoning Code, Chapter 18.30 (Planned Development Combining District) — PD master plan, PD standards, and design review requirement (**§ 18.30.050**). (Chapter 18.30)
• Morgan Hill Zoning Code, Chapter 18.24 (Commercial districts) — permitted uses and development standards (Table 18.24‑2/3). **§ 18.24.030**. (Chapter 18.24)
• Morgan Hill Zoning Code, Chapter 18.104 / review & decision tables — application processing, pre‑application, and review authority. fileciteturn1file16turn1file8 (Chapter 18.104)
• Morgan Hill Zoning Code, Chapter 18.70 (Geologic clearance in the G overlay) — geologic clearance rules (**§ 18.70.040**). (Chapter 18.70)
• MorganHill_ZoningCode.md

• Official Morgan Hill code library